Search Results for: hyperplasia

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Precursor Lesions of Melanoma?

…nue to appear throughout adult life, even into the sixth and seventh decades. The histologic picture of atypical melanocytic hyperplasia, dense dermal lymphocytic infiltration with fibroplasias, and new blood vessel formation also serves to separate…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Spongiform Pustular Diseases?

…ge in which the holes are packed with neutrophils (spongiform pustules of Kogoj).” Maize JC. Dermatitis with epidermal hyperplasia. In: Maize JC, Burgdorf WHC, Hurt MA, et al., eds. Cutaneous Pathology. Philadelphia: Churchill Livingstone,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Tricho-, pilo-, folliculo- ?

…lastic infundibula exhibit tricholemmal differentiation at the bulb. In short, tricholemmoma is not a benign neoplasm, but a hyperplasia. “Tricho-” is applied correctly in the name trichotillomania, in which hair shafts are twisted to…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus

…ndibular epidermis typical of lichen planus are exaggerated in response to longstanding rubbing. Instead of jagged epidermal hyperplasia, which is expected in papules of lichen planus, there is bulbous infundibular acanthosis, which is an…

The so-called dysplastic nevus is not dysplastic at all

The so-called dysplastic nevus is not dysplastic at all

…coworkers, they expressed this view in these words: “[dysplastic nevi] fit nicely into the schema of progression from hyperplasia to dysplasia to neoplasia that is accepted in many epithelial tumor systems, both experimental and human”…

Histologic Diagnosis of Inflammatory Skin Diseases

Mycosis fungoides

…n (Parakeratosis variegata). Monatsschrift Praktische Dermatologie 1890;10:404-12. Vakilzadeh F, Brocker EB. Syringolymphoid hyperplasia with alopecia. Br J Dermatol 1984;110:95-101. Van Doorn R, Scheffer E, Willemze R. Follicular mycosis fungoides,…

Spitz nevus on the sole of a foot presenting with transepidermal elimination

Spitz nevus on the sole of a foot presenting with transepidermal elimination

…et al.] The lesion was excised under the diagnosis of atypical melanocytic nevus. Histological examination showed epidermal hyperplasia and a symmetrical, wedge-shaped compound melanocytic lesion (Figure 3A). Junctional and intradermal nests were…

Ocular Inflammation

Ocular Inflammation

…to brake up and to evaporate, thereby resulting in dryness of the ocular surface.”[18] Occasionally extensive squamous hyperplasia of the Meibomian duct has been reported in rosacea.[19] Zengin et al., in 1995, confirmed again that patients…

Differential Diagnosis in Dermatopathology

Keratoacanthomatous verruca vulgaris vs. Verrucous keratoacanthoma

An enlargement of normal pre-existing sebaceous lobules on the face, the forehead, cheeks, and nose in particular, that results in lesions seen clinically to consist of a rim of yellow papules around a central dell that represents a dilated ostium…